﻿<!DOCTYPE html>
<html lang="en">
<body>
    <script type="text/javascript">
        let arr = new Array(3);
        arr[0] = "Æ»¹û"
        arr[1] = "éÙ×Ó"
        arr[2] = "Ïã½¶"
        document.write(arr.join());
        document.write("<br />");
        document.write(arr.join("."));
    </script>
</body>
</html>
